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Drug

Palbociclib

Approved · FDA / EMA
ClassCDK6/cyclin D1 inhibitorEmerging researchLate-stage developmentRising momentum

Also known as Ibrance, 6-Acetyl-8-cyclopentyl-5-methyl-2-((5-(piperazin-1-yl)pyridin-2-yl)amino)-8h-pyrido(2,3-d)pyrimidin-7-one.

9
Research papers
74
Active clinical trials
3
Protein targets
28
Regulatory events
Latest activity
beta

Recent clinical, regulatory, research and industry developments relating to this drug.

Molecular Analysis for Therapy Choice (MATCH)

Clinical trial2026-07-31Results expected Q4 2026 · ClinicalTrials.gov

Profile

Identifiers & mechanism

Canonical identifiers, marketed brand names and mechanism, resolved across RxNorm, ChEMBL and ATC.

Canonical name
Palbociclib
Aliases & brands
Ibrance6-Acetyl-8-cyclopentyl-5-methyl-2-((5-(piperazin-1-yl)pyridin-2-yl)amino)-8h-pyrido(2,3-d)pyrimidin-7-one
RxNorm CUI
1601374
ChEMBL ID
CHEMBL189963
ATC codes
L01EF01
UNII
G9ZF61LE7G
Primary mechanism
CDK6/cyclin D1 inhibitor
Regulatory jurisdictions
emafda

Pharmacology & targets

3 targets

Known molecular targets and mechanisms supported by curated pharmacology databases.

INHIBITORCDK6/cyclin D1 inhibitor
INHIBITORCDK6/cyclin D1 inhibitor
INHIBITORCyclin-dependent kinase 4/cyclin D1 inhibitor

Regulatory timeline

28 events

The complete regulatory record, grouped by authority — approvals, safety advisories and label changes. Each authority shows its most recent events; expand one to read its full history.

Approval / market entry confirmed across FDA and EMA (2015-02-032016-11-09)
Approval / market entry confirmed across FDA and EMA (2025-04-232026-06-24)
Earliest approval
2015-02-03
Latest approval
2026-06-24
Authorities
FDA · EMA
Total events
28
fdaU.S. Food and Drug Administration· 26 events
2026-06-24Indication expansionMulti-authority
Indication expansion: PALBOCICLIB (NDA212436)
Evidence ↗
2026-06-24Indication expansionMulti-authority
Indication expansion: PALBOCICLIB (NDA207103)
Evidence ↗
2025-09-16Indication expansionMulti-authority
Indication expansion: PALBOCICLIB (NDA212436)
Evidence ↗
emaEuropean Medicines Agency· 2 events
2026-06-19ApprovalMulti-authority
Approval: Palbociclib Viatris (EMA)
Indication: Palbociclib Viatris is indicated for the treatment of hormone receptor (HR)‑positive, human epidermal growth factor receptor 2 (HER2)‑negative locally advanced or metastaticShow full indication

Palbociclib Viatris is indicated for the treatment of hormone receptor (HR)‑positive, human epidermal growth factor receptor 2 (HER2)‑negative locally advanced or metastatic breast cancer. in combination with an aromatase inhibitor; in combination with fulvestrant in women who have received prior endocrine therapy (see section 5.1). In pre‑ or perimenopausal women, the endocrine therapy should be combined with a luteinizing hormone‑releasing hormone (LHRH) agonist.

Evidence ↗
2016-11-09ApprovalMulti-authority
Approval: Ibrance (EMA)
Indication: Ibrance is indicated for the treatment of hormone receptor (HR) positive, human epidermal growth factor receptor 2 (HER2) negative locally advanced or metastatic breast cancer:Show full indication

Ibrance is indicated for the treatment of hormone receptor (HR) positive, human epidermal growth factor receptor 2 (HER2) negative locally advanced or metastatic breast cancer: in combination with an aromatase inhibitor; in combination with fulvestrant in women who have received prior endocrine therapy. In pre- or perimenopausal women, the endocrine therapy should be combined with a luteinizing hormone releasing hormone (LHRH) agonist.

Evidence ↗

Data from the U.S. Food and Drug Administration (U.S. Food and Drug Administration), public domain (CC0).

Contains information from the European Medicines Agency (European Medicines Agency), © EMA, reused under CC BY 4.0.

Clinical trials

182 trials

The current development programme across all trial phases — status mix, phase distribution and the late-stage studies shaping the evidence base.

Development programme
CLINICALTRIALS.GOV · LIVE REGISTRY
182
registered trials across all phases
LATEST COMPLETION 2026
74
Active studies
34
Recruiting
33
Late-stage (III+)
64
Completed
44
Discontinued
PHASE DISTRIBUTIONn = 182
Early Phase 13Phase 146Phase 1 / 223Phase 277Phase 2 / 32Phase 324Phase 43Phase N / A4

Late-stage studies

Phase III+ trials still open or recently active — where late-stage evidence is being generated.

Recent completions

Trials that read out recently, adding to the completed evidence base.

Molecular Profiling of Advanced Soft-tissue Sarcomas. A Phase III Study

CompletedPH IIIInstitut National de la Santé Et de la Recherche Médicale, Francen=6032026

Research activity

9 papers

Key research shaping understanding of this drug, combining the latest publications with the most influential evidence.

Publications over time
20162024
Most influential
Recent papers
Major research themes3
Breast Neoplasms3Neoplasms1Precision Medicine1
Journals, researchers & institutions
Top journals
  • Annals of oncology : official journal of the European Society for Medical Oncology2
  • The New England journal of medicine2
  • Acta oncologica (Stockholm, Sweden)1
  • BMC cancer1
  • Cancer research1
  • Drugs1
Leading researchers
  • DeMichele A4
  • Im SA3
  • Lu DR3
  • Colleoni M2
  • Cristofanilli M2
  • Diéras V2
  • Finn RS2
  • Giorgetti C2
Leading institutions
free-text, unnormalised
  • University of Pennsylvania2
  • Beth Israel Deaconess Medical Center1
  • Brigham and Women's Hospital and Harvard Medical School1
  • British Columbia Cancer Agency-Vancouver Centre1
  • Dana-Farber Cancer Institute1
  • David Geffen School of Medicine1

Related diseases

1 conditions

Regulator-approved indications and conditions co-mentioned with this drug across the research literature. Number shows shared papers.

Active research areas

Related drugs

5 matches

Drugs sharing diseases, protein targets and literature with this one. Ranked by graph evidence (shared targets + diseases weighted above co-mentions).

Acts on the same molecular target as Palbociclib, with 2 overlapping disease areas.

2 shared targets2 shared diseases2 shared papers

Acts on the same molecular target as Palbociclib, with an overlapping disease area.

2 shared targets1 shared disease1 shared paper

Studied across the same disease area as Palbociclib in the shared literature.

1 shared disease2 shared papers

Studied across the same disease area as Palbociclib in the shared literature.

1 shared disease1 shared paper

Studied across the same disease area as Palbociclib in the shared literature.

1 shared disease1 shared paper
References & data sources
  • RxNorm (U.S. National Library of Medicine) — drug identity
  • ChEMBL (EMBL-EBI) & UniProt — pharmacology and targets
  • Europe PMC — research literature
  • ClinicalTrials.gov — clinical trials
  • Regulatory event sources are credited in the Regulatory Timeline above.